Clouds around RY Sagittarii

Images of the star RY Sagittarii, member of the class of R Coronae Borealis stars, obtained with the NACO instrument on ESO's Very Large Telescope at two different epochs and at two different wavelengths. The left image was obtained on 24 May 2003 at a wavelength of 2.2 microns, and the right image on 17 September 2003 at 4 microns. Both images reveal strong deformations, the signatures of large clouds in the envelope surrounding the star. This was the first time these clouds were discovered around a R Coronae Borealis star, confirming the Dust Puff theory.

Kilde:

ESO

Om billedet

Id:eso0734b
Type:Observation
Udgivelsesdato:3. august 2007
Relaterede pressemeddelelser:eso0734
Størrelse:2103 x 1010 px

Om objektet

Navn:RY Sagittarii
Type:Milky Way : Star : Type : Variable
Afstand:6000 lysår
Kategori:Stars

Billedformater

Stor JPEG
182,6 KB
Skrærm JPEG
76,8 KB

Farver & filtre

BåndBølgelængdeTeleskop
Infrarød
Near-IR
4.0 μmVery Large Telescope
NACO
Infrarød
Near-IR
2.2 μmVery Large Telescope
NACO